Improvement in machines for piercing leather



diluted Statenv ASA EGGLESTON, OF FALLV RIVER, MASSACHUSETTS.

Letters Patent No. 113,863, dated April 18, 1871.

IMPROVEMENT IN MACHINES FOR PIERCING LEATHER.

The Schedule referred to in these Letters Patent and making part of the same.

I, ASA EGGLns'roN, of Fall River, in the county of Bristol and State of Massachusetts, have invented a certain Machine for Stitching Leather and heavy fabrics, of which the following is a specification.

Nature and Ubjectof the Invention.

My invention relates to the combination of a lever, punch, or awl, springs, rollers, catches, and gauges in such a way that when the work 'is properly adj usted in the machine and the lever is brought down, the punch or awl is forced through the leather or material and when the force is removed from the lever the spring, by means of a slot in a catch, clears the punch or awl from the leather or material before the rollers move the work forward for another perforation by the punch or awl, this forward movement being a part of the effect caused by removing the force from the lever.

Description of the .Accompanying Drawing. Figure l is a side elevation of the machine as invented by me, the side represented being that oppo-V General Description.

A A A A A A represent the frame of the machine, which should be substantially constructed, and may be of wood, or iron, or both.

O represents a punch or awl, round or otherwise, as may be required, with a shoulder at one end which rests in a socket in the lever D D, butis not fastened to it.

The other end ofthe punch or awl rests in a bushing in part of the frame, viz., A, which is fitted to the punch or awl.

Between the shoulder of the punch or awl and the frame A, and awund said punch or awl, is a spring,- `m,`which serves, among other purposes, to keep the shoulder of the. punch or awl in the socket aforesaid. By this manner of adjusting the'punch ci" awl the proper direction is given to it.

When the treadle B is brought down it' bringsl with it, by means of the rod or strap C, the lever D D, which turns ou the pivot E, and compresses thespring 'm and forces the punch or awl aforesaid through the material, which has been previously adjusted and held in its place by the clamps P P, and the gauge W into a hollow receiver, N, so/ placed as to receive said punch or awl and permit it to .pass entirely through the material into the cavity in said N.

When the punch or'awl has perforated the material as aforesaid the force on the treadle B is relaxed and the spring-fm forces back the leverD D, and with it the punch or awl aforesaid, out of the work or material.

As the spring-forces' back the punch or awl the catch F, which is heldin its place by the springK, catches upon the teeth vof the wheel It, which teeth are. the length of the required stitch, and causes it to revolve the distance of one tooth, which is equivi alent to the distance of one stitch.

The vertical surface of this wheel is covered with small horizontal grooves, as indicated in the drawing. Opposite to it is the wheel L, the vertical surface of which: is also covered with horizontal grooves. Both these wheels turn easily on pivots.

lhe wheel L is attached t-o a slide, T T, moving out or in. between the pieces S S, and heldin its place by the set-screw V. K

.The wheel L is set according to the thickness of the material, so that when the catch F `aforesaid turns the wheel R the pressure of that upon the material causes it to move forward the length of a stitch, or one toot-h on the wheel R. Before, however, the catch F takes hold of the wheel R, the'punch or awl has a chance to clear itself from the work or material, owing to the slot in said catch at I I, which is sufticieutly long for the spring m to force back the punch or awl far enough to take it clear from the work or material before the catch begins ,to operate on the wheel R.

This s'lot is cut in said catch where the catch is joined to the lever' D D, and the pivot on which said vcatch is hung to said lever plays in said slot back and forth,

/ J indicates a catch operating upon teeth inthe lower part of the wheel It, as shown in the figures accompanying this, and held in its place by the spring H, the purpose of the same being lto prevent the wheel R from turning back.

W indicates a sliding gauge, by which the work may be raised or lowered, asnecessary, and which .is held in the required position b v the set-screw &.

Different lengths of stitch may be obtained by re# moving the wheel It and substituting other wheels on which the teeth may be the length of the required stitch, the fineness or coarseness of the stitch depending on the greater or lesser number ofthe teeth in the wheel at R.

Claim.

I claim as my invention- In a machine for piercing leather thc catches F and T, wheels R and Lspring m, gauge W,aud clamp P, all arranged as described, for the purpose 

